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Pet food brand issues recall over bird flu contamination

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Pet food brand issues recall over bird flu contamination


Northwest Naturals issued a voluntary recall for a batch of pet food after a cat died of bird flu in Oregon, officials said. 

Testing done by the U.S. Department of Agriculture’s National Veterinary Services Laboratories and the Oregon Veterinary Diagnostic Laboratory confirmed an indoor cat in Oregon’s Washington County contracted bird flu and died after eating the pet food. 

“We are confident that this cat contracted H5N1 by eating the Northwest Naturals raw and frozen pet food,” Oregon Department of Agriculture State Veterinarian Dr. Ryan Scholz said in a Tuesday release. “This cat was strictly an indoor cat; it was not exposed to the virus in its environment, and results from the genome sequencing confirmed that the virus recovered from the raw pet food and infected cat were exact matches to each other.”

Can pets transmit bird flu to owners? 

Oregon officials are monitoring household members who had contact with the cat to see if they develop any flu symptoms, but no human cases of bird flu were identified as of Tuesday and the risk of transmission to humans remains low in the state.

The Centers for Disease Control and Prevention said that it’s unlikely for a pet owner to get sick with bird flu through direct contact with an infected pet, but it is possible. The health agency noted that in 2016, the spread of bird flu from a cat to a person was reported in New York City. The infected individual, a veterinarian, had mild flu symptoms after prolonged exposure to sick cats without using personal protective equipment.

Oregon’s Department of Agriculture said the cat death is a reminder that giving raw meat products to pets can lead to illness.

What to do if you bought the pet food

Northwest Naturals on Tuesday advised pet owners to ditch 2-pound bags of Feline Turkey Recipe raw frozen pet food, marked with best if used by dates of 05/21/26 B10 and 06/23/2026 B1. The product was sold in a dozen states and Canada. 

The pet food was sold through distributors in Arizona, California, Colorado, Florida, Georgia, Illinois, Maryland, Michigan, Minnesota, Pennsylvania, Rhode Island and Washington. The food was also sold in British Columbia in Canada.

Customers can contact the place of purchase for a full refund. 

Cats vulnerable to bird flu

Cats are particularly vulnerable to bird flu, according to the Food and Drug Administration. 

“Cats are particularly vulnerable to this virus, which can cause subtle initial symptoms but progress rapidly, often resulting in death within 24 hours due to pneumonia-like conditions,” the statement said, adding the center was under quarantine and will remain closed to the public until further notice.

Health officials in California this year launched an investigation after two cats died from suspected bird flu after being given raw milk. And in Texas, cats at a farm died after drinking raw milk from bird flu-infected cows.



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New method makes oral research non-lethal

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New method makes oral research non-lethal


Fish-friendly dentistry: New method makes oral research non-lethal
Fish-friendly dentistry: New method makes oral research non-lethal. Credit: Wibisana et al., 2024

Can we examine the teeth of living fish and other vertebrates in detail, repeatedly over time, without harming them?

Previously, small animals often had to be euthanized to obtain precise information, but now scientists have found a new way to humanely study detailed dental characteristics of vertebrates. This customizable method can be used for both living animals and museum specimens and has been published in the Journal of Morphology.

Customizable trays for precise impressions

Researchers at the Okinawa Institute of Science and Technology (OIST) and their collaborators applied human dental impression techniques to study fish teeth in a species called Polypterus senegalus.

This fish has been separated from other fish species for about 360 million years. Due to this long period of evolutionary isolation, Polypterus still has many primitive characteristics that provide important information on the early development of bony fish.

Fish-friendly dentistry: New method makes oral research non-lethal
How the dental mold works: Researchers take impressions of fish teeth, using a fish called Polypterus as an example; (A) 3D model of the mold showing mandibular/lower side, maxillary/upper side, and lateral views; (B) parts of the impression tray labeled; (C-D) adding the putty material to both sides of the mold; (E-F) the fish biting down on the putty material. Credit: Wibisana et al., 2024

The impression process begins with sedating the animal. Next, the oral cavity is prepared by gently air-drying the teeth and using a high-viscosity putty impression material to clean them.

This is immediately followed by the application of a more precise, low-viscosity polyvinyl siloxane material (an impression material widely used in dentistry) in custom-made, prefabricated 3D-printed trays to capture detailed impressions. The entire procedure typically takes five to 10 minutes.

One of the main challenges faced by the researchers was working with the small size of the fish, as their jaws were only about the size of a finger and individual teeth were less than a millimeter long. Other limitations included the need for precise cutting of the impressions for scanning and the inability to see inside the teeth structure.

However, the researchers successfully performed the procedure on 60 fish with no fatalities. They observed detailed microwear patterns—tiny patterns in the tooth surface resulting from use over time.

Fish-friendly dentistry: New method makes oral research non-lethal
Step-by-step process of taking fish teeth impressions: The researchers took teeth molds from Polypterus fish (about 20 cm long); (A) setting up the materials; (B) carefully sedating the fish; (C) drying the mouth area with compressed air; (D-E) cleaning the teeth with dental putty; (F) applying the molding material to the tray; (G-H) taking the impression by gently pressing the fish’s jaws onto the mold while supporting its head. Credit: Wibisana et al., 2024

Non-destructive tooth tracking

Dr. Ray Sallan, a dentist and researcher at OIST’s Science and Technology Group, described how the method provides several significant advantages over traditional techniques: “Previously, researchers had to euthanize specimens to study their teeth using CT scans or other methods.

“This new approach allows for non-destructive examination of living specimens, enabling researchers to track tooth replacement and development over time. It’s very valuable for studying rare species or museum specimens that can’t be damaged.”

The new technique has broad applications in various fields. It can be used to study microwear patterns to understand feeding habits, which is particularly useful in comparing modern species with fossils to determine ancient dietary patterns. The method can also be applied to study jaw biomechanics, track developmental changes, and examine comparative anatomy across species.

Fish-friendly dentistry: New method makes oral research non-lethal
(A-B) Complete mold showing (A) upper jaw and (B) lower jaw impressions; (C-D) detailed scans of the upper jaw showing (C) back tooth and (D) front tooth. Credit: Wibisana et al., 2024

OIST Ph.D. student and co-first author, Johannes Wibisana, from the Genomics and Regulatory Systems Unit highlighted the technique’s versatility in studying different animals.

“By checking the same features across different species, we can objectively compare variations due to diet, growth issues, or genetics. This method allows us to create plots showing differences between species or individuals. Dental traits from diverse species provide a valuable data set for analysis,” he said.

The researchers are currently working on new experiments using this method with larger fish specimens and other vertebrates. They are particularly interested in studying tooth replacement patterns, which have never been quantified in living fish before. Only mammals have permanent adult teeth, while other vertebrates regularly grow new teeth throughout their lives.

“Our method has many potential applications and can be widely used, especially by museums and researchers sampling biodiversity. We can now safely and economically study and compare mouth structures, revealing differences and meticulous information that wasn’t previously accessible,” Prof. Lauren Sallen, leader of the Macroevolution Unit and senior author, added.

More information:
Modifiable clinical dental impression methods to obtain whole-mouth and detailed dental traits from vertebrates, Journal of Morphology (2024). DOI: 10.1002/jmor.70017

Citation:
Fish-friendly dentistry: New method makes oral research non-lethal (2024, December 26)
retrieved 26 December 2024
from https://phys.org/news/2024-12-fish-friendly-dentistry-method-oral.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.





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The retro hobby that can help boost happiness levels

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The retro hobby that can help boost happiness levels


grey placeholderBBC A treated image shows a tower of wooden blocks with smiley faces on themBBC

On a cold day in November, hundreds of people flocked to an arena in Coventry, which has previously hosted gigs by Oasis, Rihanna, and Harry Styles, for an event of a very different kind.

The 500 people who turned out – some from as far afield as Mongolia and Canada – were taking part in an activity less known for drawing in crowds: the Rubik’s UK Championship in “speedcubing,” or racing to solve puzzle cubes at terrific speed.

Rows of tables were laid out in the arena and 15 events took place over three days. Some involved solving the puzzle one-handed, others while blindfolded. Teenager James Alonso won the tournament’s biggest event – solving the classic 3×3 cube at speed with an average of 6.3 seconds.

Speedcubing has been popular since the 1980s and the world record for a single solve in that event is currently held by Max Park from the US, with a time of just 3.13 seconds. It is a far cry from the initial speed of Ernő Rubik, an architecture professor, who invented the Rubik’s Cube in 1974 and took around a month to solve it.

grey placeholderGetty Images Ernő Rubik pictured with some cubesGetty Images

Inventor Ernő Rubik

Flash forward to today and an estimated 412,000 people have taken part in speedcubing competitions worldwide. The popularity has increased too, with reported global sales of Rubik’s Cube products recorded as $86.6m (£67m) in 2023, up 13.5% on 2022. (The brand was acquired by a Canadian multinational toy company Spin Master in 2021.)

That’s not counting the sales of other types of puzzle cubes by different brands. Some are wooden, others electronic with built-in bluetooth, then there are those with all manner of colourful designs.

But now, scientists have lauded speedcubing, in particular, as not only a popular hobby but one that could have wellbeing benefits too.

“Speedcubing offers a unique combination of cognitive challenge, [alongside] social connection, and personal achievement that contributes to happiness”, says Polina Beloborodova, research associate at the University of Wisconsin-Madison’s Centre for Healthy Minds.

And this is said to run far deeper than a simple momentary rush.

Cubing and happiness: what experts say

“Speedcubing satisfies the basic psychological need for competence, the feeling of effectiveness and mastery,” explains Dr Beloborodova. It involves a number of factors including, problem-solving, memory, spatial reasoning and motor coordination.

But solving the cube may also elicit happiness because it taps into other emotions, according to Dr Julia Christensen, a senior research fellow at the Max Planck Institute for Empirical Aesthetics in Germany. “Awe, beauty, being moved, all these are aesthetic emotions, and experiencing them gives us an extreme sense of happiness,” she says.

“For example, when a pattern is the right pattern, when a move is particularly amazing on the cube, these aesthetic emotions can give transformative experiences.”

Some speedcubers have described the state of mind that the activity can bring as a sense of “flow”.

“This state is achieved when the activity’s difficulty matches your skill level, distractions are minimal, the goals are clear, and feedback is immediate — all of which are characteristics of speedcubing,” says Dr Beloborodova.

Flow can feel “almost meditative”, according to Ian Scheffler, author of Cracking the Cube, who has experienced this first-hand. “You enter this state where you are kind of thinking and not thinking at the same time – you are reacting to what the cube is giving you, but in almost an instinctual way.

“It’s a kind of mindfulness that’s deeply rewarding… a peaceful, calm state where you’re completely in tune with every twist of the puzzle.”

grey placeholderGetty Images An elderly persons hands move a cubeGetty Images

Some speedcubers describe the state of mind that the activity can bring as a sense of ‘flow’

There is good reason to seek a flow state regularly, according to Dr Christensen. “Science shows that people who regularly experience flow have a better mental health, possibly better physical health, and are more in tune.

“When we repeat movements they become logged or encoded from explicit, effort-full memory systems, and pass into implicit, less effort-full, and procedural memory systems,” she continues.

Nicholas Archer, a 17-year-old speedcuber from West Yorkshire, who won the one-handed competition in this year’s UK Championship with an average time of 8.69 seconds, says that he has experienced this. “When I’m solving the cube, I’m certainly not having to think too much about what I’m doing. It’s all automatic.”

Speedcubing social benefits

“Speedcubing or solving a cube on your own may increase your happiness,” says Dr Adil Khan, a reader in neuroscience at King’s College London (KCL) – but when combined with the social aspect, any benefits may be greater.

“Since speedcubing is a social phenomenon, perhaps the social aspect combines with the puzzle solving to deliver a deeply satisfying experience.”

Jan Hammer started speedcubing at the age of 44, after being introduced to it by his 13-year-old daughter. He has since solved the cube around 10,000 times but does not think he would have maintained this level of enthusiasm had he been speedcubing alone.

“The fact that I can do this with my daughter and that we cheer for each other is wonderful. Additionally, being part of the cube community has become a huge motivation.”

grey placeholderGetty Images Two children in school uniform play with a colourful puzzle cubeGetty Images

Competitions tend to have more children and teenagers than adults

Competitions tend to have more children and teenagers – it is not uncommon for competitors to be as young as six. The activity is also significantly more popular with males. The World Cube Association reports that 221,117 men have competed at their events, compared with 24,311 women.

Regardless of demographic, “for those who view speedcubing as a significant part of their life – such as participants in tournaments – it can offer eudemonic happiness, fostering a sense of purpose and meaning through dedication, accomplishment, and community of like-minded people,” argues Dr Beloborodova.

Psychologists differentiate between two aspects of happiness: “hedonic wellbeing,” related to emotional experiences, and “eudemonic wellbeing,” which concerns meaning and purpose in life.

“Both are essential for overall happiness and speedcubing can contribute to both types of wellbeing,” she says. All of this “contributes to better mental health”.

Puzzles and the brain: the science

The effects of speedcubing on the brain and cognitive function are, however, less clear.

While solving a cube, the brain is trying out different moves, asking “what might happen if I move the cube in this way?” explains Dr Toby Wise, senior research fellow in neuroimaging at King’s College London.

“Your brain stores a memory trace for different configurations of the cube, and it can run through different configurations to predict which will have the best outcome.”

However it doesn’t necessarily create long-term benefits, like improvements to memory function. This is because, as Dr Khan explains, the brain is not like a muscle that needs to be flexed to make it grow.

For many years it has been suggested by some that solving puzzles, whether Sudoku or crosswords, can have a hand in slowing cognitive decline or dementia. However this is not necessarily the case.

A study undertaken by Aberdeen Royal Infirmary and the University of Aberdeen, and published in the BMJ in 2018, found that people who regularly do intellectual activities throughout life have higher mental abilities, providing a “higher cognitive point” from which to decline, but that they do not decline any slower.

“Solving puzzles does not improve your brain power in much other than the puzzle itself,” argues Dr Khan. “And almost certainly does not prevent age-related decline in brain power.”

One further benefit of speedcubing, according to regular players, is its sense of escapism from frenzied modern life.

“Having a clear goal, something that you can actually realise, is something that we don’t necessarily have in everyday life, and that appeases our brain,” says Dr Christensen.

This perhaps explains why the cube is so popular in an age with myriad computer games and technological activities to choose from. As Mr Hammer puts it: “When I pick up the cube, I become more alert and focused.”

He uses it in the workplace too. “It can help me enter the next meeting with a more structured perspective,” he says.

Mr Scheffler agrees: “The process of taking the cube from this chaotic, disordered state, which is always different because there’s so many permutations of the puzzle, to the same ordered state is fundamentally something that humans want to be doing.

“There’s a fundamental human need to make order out of disorder, because the universe is a very chaotic place, and most things are not ordered.”

Top picture credit: Getty Images

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Massive Antarctic icebergs may calve at random, analysis suggests

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Massive Antarctic icebergs may calve at random, analysis suggests


iceberg
Credit: Unsplash/CC0 Public Domain

Antarctica is losing ice quickly, in part because of climate change. Massive calving events, such as the one that formed the Delaware-sized (5,800 square kilometers, or 2,239 square miles) A-68 iceberg in 2017, can destabilize ice shelves and capture the public’s attention. But the infrequency of extreme calving events makes it difficult for scientists to predict them and understand whether they are connected to climate change.

To explore potential connections between climate change and large iceberg formation in Antarctica, researchers carried out the first long-term analysis of the continent’s biggest annual icebergs. Because such large calving events are rare and unevenly distributed, the researchers used statistical approaches specifically geared toward small datasets with long tails to look for changes in calving event frequency over time. They focused on the single largest iceberg to form each year from 1976 to 2023. These icebergs had surface areas up to 11,000 square kilometers (4,247 square miles).

The study, which appears in Geophysical Research Letters, revealed that the surface area of the largest annual iceberg decreased slightly over time and that despite the growing influence of climate change, the risk of an extreme calving event did not increase.

Because climate warmed over the study period but the largest iceberg area did not increase, the findings suggest that extreme calving events are not necessarily a direct consequence of climate change, the authors write.

However, the number of smaller calving events has increased over time, other work has found. This study highlights the role of these events in chipping away at Antarctic ice in a “death by a thousand cuts,” the authors write. Though extreme calving events make dramatic headlines, more common, smaller iceberg formations are the main source of climate change–driven mass loss in Antarctica, they conclude.

The researchers also found that the biggest Antarctic iceberg may be yet to come. Although they do not predict an increase in the frequency of extreme calving events, their modeling suggests that a “once in a century” iceberg could be roughly the size of Switzerland (38,827 square kilometers, or 14,991 square miles).

More information:
Emma J. MacKie et al, 47 Years of Large Antarctic Calving Events: Insights From Extreme Value Theory, Geophysical Research Letters (2024). DOI: 10.1029/2024GL112235

This story is republished courtesy of Eos, hosted by the American Geophysical Union. Read the original story here.

Citation:
Massive Antarctic icebergs may calve at random, analysis suggests (2024, December 23)
retrieved 26 December 2024
from https://phys.org/news/2024-12-massive-antarctic-icebergs-calve-random.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.





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‘Love and hugs’ for Kate and ‘Shift to Reform’

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‘Love and hugs’ for Kate and ‘Shift to Reform’


grey placeholderDaily Mirror: With love and hugs

Many of Boxing Day’s front pages feature images of members of the Royal Family after they attended the Christmas Day church service in Sandringham alongside the King and Queen. “With love and hugs” is the Daily Mirror’s front page as it features an image of the Princess of Wales smiling and poignantly embracing a woman who gathered to watch.

grey placeholderThe Times: Action plan as private schools face bankruptcy

The Times features a story on a fatal airliner crash in Kazakhstan and it quotes experts who say the Azerbaijan Airline aircraft may have been caught in an air defence response to Ukrainian drone attacks on Grozny in the Chechen republic of Russia. Elsewhere, the paper touches on a personal message of gratitude from King Charles to health workers who have supported him during his cancer treatment. The lead story says Whitehall is “braced for private schools collapse” due to fee rises which come into force in the new year.

grey placeholderThe Guardian: Alarm at 'wild west' trade in weight-loss injections

Images of the plane crash in Kazakhstan which killed 38 people in Aktau also feature on the front of Thursday’s Guardian. Elsewhere on the front of the newspaper, it leads on a story on weight-loss injections, including Wegovy and Mounjaro, being aggressively marketed to UK consumers. The Guardian says it has reviewed reports by the Medicines and Healthcare products Regulatory Agency.

grey placeholderDaily Mail: Charles - My heartfelt gratitude to 'selfless' doctors and nurses

The Daily Mail also touches on the King’s candid message, which was delivered in the Fitzrovia Chapel in London, where he offered his “heartfelt thanks” to the doctors and nurses who helped with the “uncertainties and anxieties of illness”. The Princess of Wales also features on the the front of the paper smiling as the Mail says Kate is an “inspiration” to all cancer patients.

grey placeholderDaily Express: Shops relying on sales to beat budget blues

Sprawled across the front of the Daily Express is a headline hinting that panicked retailers are pinning hopes on a Boxing Day spending bonanza to beat what the paper describes as “budget blues”. Also on the front is an image of Nessa from Gavin and Stacey – as the much-anticipated finale episode aired on Christmas Day 17 years after its debut.

grey placeholderi newspaper: Labour's growing election threat from Farage's Reform UK

As 2024 draws to a close, the i newspaper reviews the political year but says British political parties are moving into a three-way tie, with Reform UK almost even with Labour and the Tories, according to leading polling expert Sir John Curtice. “Britain’s traditional system of two-party politics now seemingly faces its biggest threat since the foundation of the SDP in 1981,” he concludes.

grey placeholderDaily Telegraph: Hunters to face harsher penalties.

In other domestic news, fox hunters to face bigger fines under Labour’s plans, according to the lead story on Boxing Day’s edition of the Daily Telegraph. In addition to ban on trail hunting, the paper says people could be prosecuted if a fox is killed through “recklessness”

grey placeholderThe Sun: Beret Xmas Kate

The Princess of Wales features on the front of the Sun as it reflects on festive cheer for fans of the Royal Family who were out and about in Sandringham on Christmas Day. Catherine is pictured smiling in a forest-green coat with a matching fascinator and tartan scarf, as she joins her husband, the Prince of Wales, and their children.

Many of the papers feature photos of the Royal Family at their Christmas service in Sandringham, Norfolk.

“Beret Xmas Kate” is the headline in the Sun, which includes a front-page photo of the Princess of Wales in her headwear.

The Daily Mail calls her an “inspiration” to cancer sufferers, and leads on the King’s speech – focusing on Charles’s praise for the “selfless” health workers who have treated his family this year.

Contingency plans are being drawn up in Whitehall for an increase in pupils attending state schools, amid concerns of some independent institutions collapsing when VAT is levied on fees in the new year, according to the front of the Times.

British sitcom Gavin and Stacey aired for the last time on Christmas Day and the Daily Star dedicates its front page to the TV show.

grey placeholderPA Media The Princess of Wales following the Christmas Day morning church service at St Mary Magdalene Church in SandringhamPA Media

Royals greet well-wishers at Sandringham Christmas service

Polling expert Sir John Curtice tells the i newspaper that Labour’s support among voters has “fallen away sharply” with a rapid decline in popularity not seen before in a new government. He says that Britain’s established two-party system faces its biggest challenge since the early eighties – and the rise of the SDP – with Labour, the Tories and Reform all polling at consistently similar levels.

In other domestic news tougher penalties may be on the way for people who break fox hunting laws, the Daily Telegraph reports. It says there could also be prosecutions when a fox is killed through “recklessness”.

The Daily Express reports that many high street retailers see today’s Boxing Day sales as crucial for their sales figures.

Finally, the Guardian leads with concerns about the marketing of weight loss jabs saying the medical advertising watchdog is examining complaints that rules about the promotion of prescription-only drugs are being flouted.

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